When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Pure water (H2O) does not conduct electricity on its own.
46
One cubic foot of gold weighs more than 1,200 pounds!
78
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65